Update README.md

Author: Joel Denning

README.md

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 An in-browser javascript module for communication with the API
 
-[![CircleCI](https://circleci.com/gh/react-microfrontends/api.svg?style=svg)](https://circleci.com/gh/react-microfrontends/api)
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 ## What is this?
 
 This is an example microfrontend repo demonstrating how to use [single-spa](https://single-spa.js.org). You can see the code running at https://react.microfrontends.app.